Ments



(No Model.) v

E. LANDVOIGT 85 B. G. FENWIGK.

. MACHINE FOR MIXING MORTAR.

No. 370,629. latented Sept. 27, 1887.

UNITED STATES PATENT Gr mace.

EDWARD LANDVOIGT AND B. CARLYLE FENWIOK, OF WASHINGTON, DIS- TRICT OFCOLUMBIA; SAID FENWIOK ASSIGNOR, BY MESNE ASSIGN- MENTS, TO WILLIAM A.KIMME L, OF SAME PLACE.

MACHINE FOR MIXING MORTAR.

SPECIFICATION forming part of Letters Patent No. 370,629, datedSeptember 27, 1887.

I Application filed February 28, 1887. Serial No. 229,127. (No model.)

To all whom it may concern.-

Be it known that we, EDWARD LANDVOIGT and B. CARLYLE FENWIOK, citizensof the United States, and residents of Washington city, District ofColumbia, have invented a cer-. tain new and useful Machine for MixingMortar for the Use of Bricklayers and Plasterers, of which the followingis a specification.

Our'invention consists, first, in a mortarmixing machine comprising alime-slaking box or vessel, a slaked-lime-receiving chamber adapted tobe in communication with the slaking-chamber, and a vertical chamber inwhich slaked lime and sand, or sand and'hair, are introduced, tempered,and mixed by horizontally-revolving stirring-arms, and from the bottomof which chamber a given quantity say a cart-loadof mixed mortar may bedischarged at the will of the operator, or from which an almost constantflow or discharge into carts or proper receptacles can be accomplished,accordingly as desired.

It consists, second, in certain constructions, combinations, andarrangements of parts, as will be hereinafter described and specificallyclaimed; and it consists, third, in the hereinafter-described process bywhich the mortar is mixed while its constituent parts areflowinghorizontally and vertically.

In the accompanying drawings, Figure l is a View, partly in section andpartly in elevation, illustrating our invention. Fig. 2 is a section ofthe sand and lime tempering and mixing cylinder with its bottom portionmodified in some respects. Figs. 3, 4, 5, 6, 7, 8, 9, and 10 are detailviews of parts of the machine.

A represents a metal mixing cylinder or chamber, surmounted by a flaringwooden hopper or chute, B, and supported by a suitable frame-work, as a.The bottom'b of this cylinder is provided with a long hand-lever, c, andis pivoted at d and clamped in a closed position by a beveled plate, f,as illustrated in the drawings. Just above the bottom I) an openstepspider, b, is provided within the cylinder, and in a socket of thisspider a fixed step-block, g, is set-and kept from turning by its squareends 9.

Into the round socket of the stationary stepblock g'a revolvingstep-block, C, is fitted, and into the socket of this block a hollowshaft, E, provided with stirrers, as h, is fitted, and down through thishollow shaft, and resting in a reduced square socket of said revolvingstep- 5 block, is extended a solid driving-shaft, F, as illustrated inthe drawings. This solid shaft may be connected by set-screws to thehollow shaft, and it is properly supported at its upper end by suitablemeans, as shown, and is driven by appropriate gearing, as E, or othersuitable means. In the drawings we have shown the lower arms of thestirrer connected by open half'sockets c with the revolving step-block;but this mode of connection is not essential. We have made the hollowshaft E, in which the arms h are inserted, separate from the solid shaftF and shorter than the same, as shown, and by this means we save expensein repairs, as the necessity-of removing anything more than the hollowshaft, with its arms, is avoided when one or more of the arms becomebroken, and by attaching each set of the arms to short thimble-sectionsof shaft, one resting upon another and secured by screws, asectionhaving abroken arm or arms can be removed and another applied in itsplace and secured by a set-screw. On one side of this mixing -cylinder alime-slaking box, G, is arranged. This box is provided, as usual, with aslidegate, 1', at its discharge end, and it is made with anarresting-ledge, i, just above its bottom at the discharge, forpreventing the escape of unslaked lime, and thus plaster-pops areavoided. To this slaking lime box we attach an auxiliaryslaked-lime-receiving and gage box, G. It is provided with gage-pins jjj j which serve I as indicators of given quantities of slakcd limedischarged into the-rnixing-cylinder- 0 that is to say, the fall ofslaked lime in box G from pin 7' to j will indicate a quantitysufficient for a cart-load of sand, and from j to j for two cart-loadsof sand, and so on. This auxiliary boxis connected from its under sidewith the mixing-cylinder A by means of a tube or spout, It, asillustrated in the drawings. In Fig. 10 the lime-box proper and theauxiliary gage lime-box are shown in section, and the gate or valve 1?,by which the discharge is cut off or let on, is more clearly representedthan in Fig. 1.

In Fig. 2 the mixing-cylinder is shown constructed with an immovablebottom, I), and on this bottom a discharge-chute, b and a sliding gateor valve, an, are provided, and in opening the valve the mixed lime andsand, or mixed lime, sand, and hair, are discharged freely. In Fig. 9the stirring-arms of the hollow revolving shaft are formed with a slightspiral twist or bevel, and by this construction the lime and sand, orlime, sand, and hair, are stirred and lifted up and down in a morethorough manner than with round straight or square straight arms. Theoutline or shape of the stirrers may be that shown in Fig. 8, or anyother proper construction.

It will be observed thatthe stationary stepblock of the stirrer-shaft isoutside of the mixing-cylinder shown in Fig. 2, that the hollow shaftmay be dispensed with, and the arms inserted directly into the solidshaft F. We shall, however, use the hollow shaft, with its arms, inconnection with this modified form, if desired. llith this constructionthe step end of the stirrer-shaft is rendered more accessible in case ofrepairs being necessary.

The'operation is as follows: The lime and water are mixed in the box G,and at proper times a quantity is run oft" into the auxiliary box Gbeneath the gate-say sufficient to fill the space between the bottom ofthe box and top gage-pin. T hen the gateiis closed and the gate iopened, and a quantity of this slaked lime, as required, is allowed torun into the cylinder A. Now a quantity of sand sufficient to properlymix and make mortar is thrown into chute B and allowed to flow intoeylinderA and mix with thelime-water. As soon as the sand has begun toflow down the chute the stirrer is set in motion, and thus a thoroughmixing of the sand with the lime is accomplished. This done,the mixedmortar is withdrawn from the cylinder by opening the bottom, which isaccomplished by the lever being pulled sidewise and the bottom turnedhorizontally on its pivot.

With the modified plan shown in Fig. 2 the material is mixed as in Fig.1, and the gate at is moved outward to allow the material to run throughthe chute. It is probable that the operator may carry the mixing anddischarging on continuously after the first load has been mixed, thisbeing done by flowing on the lime water and sand simultaneously andkeeping the necessary gates open.

What we claim is- 1. The limc-slaking box provided with a gate anddischarge-passage, the base of said discharge-passage being locatedabove the bottom of said box in order to trap and stop the discharge ofunslaked lumps, in combination with a slaked-lime-receiving chamberlocated below said slaking-box and provided with a discharge-passage andgate, and with a vertical mortar-mixing chamber having a movable bottomand furnished with a vertical shaft having horizontal stirrer-arms, allconstructed and arranged substantially as and for the purpose described.

2. The within-described mortar mixing machine, comprising a lime-shakingbox, a slaked-lime-receiving chamber having communication with theslaked-lime box, and a vertical mortar-mixing chamber havingcommunication with the lime box and chamber and provided with asand-conducting chute at its top, a discharge at its bottom, and with avertical shaft having horizontal stirringarms, all constructed andcombined substantially as and for the purpose described.

3. The combination of the stationary limeslaking box, theslaked-lime-reeeiving and gage box having indication-pins orequivalents, and a vertical mortarnnixing chamber provided with arevolving shaft having horizontal stirring and mixing arms,substantially as and for the purpose described.

4. The vertical mortar-mixer consisting of a vertical chamber and shafthaving horizontal arms and a sand-chute, in combination with the limeslaking box and slaked-lime receiver by which the slaked lime isprepared and introduced into the mixing-chamber, substantially as andfor the purpose described.

5. The combination of the solid drivingshaft F, hollow-armed shaft E,mortar-mixing chamber A, step-block g g, fitted within a socket of anopen spider, b, of the mixingchamber, and revolving step-block 0,substantially as and for the purpose described.

6. The within-described process of mixing mortar, consisting in slakinga body of lime in a chamber with water, separating the im purities fromthe slaked lime, flowing the slakcd lime and a body of sand, or bothsand and hair together, downward in a vertical direction, and subjectingthe mixture until it is finished and discharged to a horizontal rotaryand vertical movement, as set forth.

In testimony whereof we afiix our signatures in presence of twowitnesses.

EDVV. LANDVOIGT. B. CARLYLE FENWIOK.

Witnesses:

R031. L. FENwIoK, EMMA M. GILLETT.

IlO

